Vapor electric device.



E WEINTRAUB.

VAPOR ELECTRiC DEViCE.

APPLICATION FILED MAR.13,!913.

Patented May 4, 1915.

- Flg Z i; I Fig! Voltage Current Witnesses Im/entor Ezechlei Weintraub ,sil'rc lampprovided' with amercu ion a sfioed by refergnce tol ig. 3." A

pleflsgd as; and or I of giYe-n of tz'lbei "t be; at a. oeztgin cnrrmt vizfflflie lfiit wen; aiianplagd-to operate snchgilapap at; a cal-mu; value m r a alu $13 ou diir caniinaagsl-fimtil destroyedi Whenflie device is gimvided a solid zmbde volt-ampere curve retainslts gen and sha'peQhfi. while it alsp bemmesyq-y steep aii a certain Q D-R valag shown by cm-145 B,-

is flatter its gradualiim ten. l tb Heithertypepflgmpwer'eto'be on a series, at constant it would be fi value below of a lamp witha mermry-anodgjhgfidandy is post at the hmienhvalhes 1mby welt-ampere orthlsreasen,

' lefottlfisclasofmeewith a solid anode 1nd:

high efiid'ency on series circmts. 1 small condensing space, such as Fig. 1', or other owling means is protided n51! thucsthod'e adjustgd to be size tube and to the energy eonsumptiqn critical point may be farting, as shown by curve C. greater current Yab'esgre thus available fdr As the of ghe highpressure lamp incrcasszsl: 3. her rate than the energy 00!:-

End; is obviously of g at vantage. when a limp constrnded in mtdm the shave. destripion isoperated contracted urn-ant. value somewhat blow the wial the volt-ampere becmne very steep the vary high eficivncy of 0.35 watt mean spherical dl flower in a unit 600 to watts is obti' 0 multi lecircuits the horizontal type of laizip as my application, Serial 370. 33,946, and having a solid mode near which condensation of'mercm'y is suppre fed when apex-sled on, say, 110 volt: cirsuit will came Entn equilibrium at a cam aux-refit n the neighborhood of 4 amperes and thF independently of the resistance in 7 .:-'in Qtha' words. independently of the sw 11;; current This-fact is due to the o -ampere characteristic of the tube. I find that if the quartz tube. is to be operated at a higher current value ibis can be done by tube with some condensing space near the cathode.

In vertical of lamp,,in which the whq m-wn aini g F y-f h mt fi ifih 12h vo tagfi" e ,mmpm cnr w than in f lamp ram s me this cam On Hilwgfl; ell-cult it is impbs ible to run the lamp wt in unless the tube is made undesirably dam-t.

while in the v no sud! dim In case in than:-

current vn struction in this cagais like that scribed in eonneetiou with flan-sm les m exessoi 15-watts per sqtzxm of In" relop, disaipating cathodctoraisethecrih a l-gent valve at which the voltage mamsusabru tly, and maintaining the operating current a little below this critical point.

2. The method of operating a high pressure are in an inclosed spam em vapor-emitting cathode and llsolid refractot' anode," which consists in dimipating heat near the cathode to raise me crifiml value of current at which the voltaga increases abruptly and the queratjng current a little below this critical value.

3. The method of operating I high pressure mercury va arc een n my cathode and a solid anode with a variable voltage, constant current energy supply welop, dissipatin enough heat near the cathode to raise tEe critical value of current at which the voltage consumed in the are in creases abruptly without increase of current, and nluintainln the operating current slightly below thls p1'itical value.

In witness whereof, I have hereunto set my hand this 11th day of March, 1918.

EZECHIEL WEINTRAUB. Witnesses:

JOHN A. MCMNUB, Jr., FRANK G. HATI'IIE.

It is hereby certified that in Letters Patent No. 1,138,163, granted May 4, 1915,

upon the application of Ezechiel Weintmub, of Lynn, Massachusetts for an improvement in Vapor Electric Devices, errors appear in the printed specification requiring correction as follows: Page 2, line 41, for the word valves read valued;

same page, line 116, for the word valve read value; page 3, line 2, strike out the syllables and words velop, dissipating enough and insert the words which consists in dissipating; and that the saidLetters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this last day of June, A. D., 1915.

[Ink] J. T. NEWTON,

Acting Oommz'uioner of Palm. 

